diff --git a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysDeptServiceImpl.java b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysDeptServiceImpl.java
index 411786ee..fd99137e 100644
--- a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysDeptServiceImpl.java
+++ b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysDeptServiceImpl.java
@@ -540,7 +540,8 @@ public class SysDeptServiceImpl implements ISysDeptService, DeptService {
 
     @Override
     public String selectDeptNameById(Long id) {
-        return baseMapper.selectById(id).getDeptName();
+        SysDept sysDept = baseMapper.selectById(id);
+        return sysDept != null ?sysDept.getDeptName():"";
     }
 
     /**
diff --git a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/comprehensive/service/impl/XzdCsContractInformationServiceImpl.java b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/comprehensive/service/impl/XzdCsContractInformationServiceImpl.java
index 0396a053..a7f50df4 100644
--- a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/comprehensive/service/impl/XzdCsContractInformationServiceImpl.java
+++ b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/comprehensive/service/impl/XzdCsContractInformationServiceImpl.java
@@ -429,6 +429,7 @@ public class XzdCsContractInformationServiceImpl extends ServiceImpl<XzdCsContra
 
     @Override
     public String queryCodeById(Long contractCode) {
-        return baseMapper.selectVoById(contractCode).getContractCode();
+        XzdCsContractInformationVo vo = baseMapper.selectVoById(contractCode);
+        return vo!=null ?vo.getContractCode():"";
     }
 }
diff --git a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/contractManagement/purchaseManagement/service/impl/XzdPurchaseContractInformationServiceImpl.java b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/contractManagement/purchaseManagement/service/impl/XzdPurchaseContractInformationServiceImpl.java
index 4c3f9fdd..f2e4bc0c 100644
--- a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/contractManagement/purchaseManagement/service/impl/XzdPurchaseContractInformationServiceImpl.java
+++ b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/contractManagement/purchaseManagement/service/impl/XzdPurchaseContractInformationServiceImpl.java
@@ -392,7 +392,8 @@ public class XzdPurchaseContractInformationServiceImpl extends ServiceImpl<XzdPu
 
     @Override
     public String queryCodeById(Long id) {
-        return baseMapper.selectVoById(id).getContractCode();
+        XzdPurchaseContractInformationVo vo = baseMapper.selectVoById(id);
+        return vo !=null ? vo.getContractCode():"";
     }
 
     public void setValue(List<XzdPurchaseContractInformationVo> infos){
diff --git a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/costProjectApproval/costBudget/service/impl/XzdCbysZjhcbServiceImpl.java b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/costProjectApproval/costBudget/service/impl/XzdCbysZjhcbServiceImpl.java
index 8662f7eb..8263eb55 100644
--- a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/costProjectApproval/costBudget/service/impl/XzdCbysZjhcbServiceImpl.java
+++ b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/costProjectApproval/costBudget/service/impl/XzdCbysZjhcbServiceImpl.java
@@ -233,7 +233,8 @@ public class XzdCbysZjhcbServiceImpl extends ServiceImpl<XzdCbysZjhcbMapper, Xzd
 
     @Override
     public String queryNameById(Long id) {
-        return baseMapper.selectVoById(id).getDocTitle();
+        XzdCbysZjhcbVo vo = baseMapper.selectVoById(id);
+        return vo != null ? vo.getDocTitle():"";
     }
 
 
diff --git a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/settlement/service/impl/XzdJsCgJungonServiceImpl.java b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/settlement/service/impl/XzdJsCgJungonServiceImpl.java
index 2133c6a1..60ed90ce 100644
--- a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/settlement/service/impl/XzdJsCgJungonServiceImpl.java
+++ b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/xzd/settlement/service/impl/XzdJsCgJungonServiceImpl.java
@@ -249,7 +249,8 @@ public class XzdJsCgJungonServiceImpl extends ServiceImpl<XzdJsCgJungonMapper, X
 
     @Override
     public String queryNameById(Long contractCode) {
-        return baseMapper.selectVoById(contractCode).getDocCode();
+        XzdJsCgJungonVo vo = baseMapper.selectVoById(contractCode);
+        return vo!= null? vo.getDocCode():"";
     }
 
     /**